Early Image made by uranium rays. Image of a hand. Rutherford & Soddy. at McGill. Professor Emeritus M.A. Whitehead Director, Canadian and International Constituency Group Chair of Awards Committee. Releasing the Power of the Atom Early Canadian Connections. Soddy at McGill 1902-1904.
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Image of a hand
Professor Emeritus M.A. Whitehead
Director, Canadian and International Constituency Group
Chair of Awards Committee
World tour 1903
28th. March, 1901
“The existence of Particles
smaller than Atoms”:
Soddy then Rutherford:
Continued next week!
half life =1 min.
Soddy & Rutherford Research
“Soddy don’t call it transmutation!”
1) Disintegration theory 1902
2) Radioactivity of thorium 1902
4) The gaseous emanation from thorium found to be like argon
5) Condensation, 1902: thorium emanation condensed at
–150oC, i.e. a real gas
Soddy & Rutherford apparatus 1902, to condense emanations
7) The half-life of radon, 1903
8) Radioactive change, 1903
(a) radium, thorium and uranium radioactivity gave new matter
(b) radioactive decay function of several types of matter change
(c) radioactivity was an atomic phenomenon
And saw that Heat was got from Fire.
Moved into Theory, went higher,
You did not know it, but you were
The first Research Professor, sir,
Contained, within your hairy Body,
A noble Rutherford or Soddy.
Nay, -- what is more, -- your Lot was rude
But showed the College attitude,
You made it an unswerving Rule
To disregard the Common Fool,
You overlooked the silly chaff
Of Laughing Jackass, gay Giraffe,
You heeded not the caustic Smile
Of Dinosaur or Crocodile,
Passed undisturbed the Ridicule
Of comic Crow or haw-haw Mule, --
In short, in Culture's earliest Span
You acted like an Oxford Man
Lectureship in Physical and Radio Chemistry at Glasgow University.1904-1914.
1) Book delayed because of Rutherford’s
2) Advised the Cassel Cyanide Company of Glasgow: 50 kilograms of uranyl nitrate allowed proof that radium grew from uranium.
3)With Alexander Fleck, discovered
(a) many short-lived radioactive elements
(b) chemically inseparable
(c) spectroscopically identical
(d) disintegrated differently.
Dr Margaret Todd suggested ‘isotope’.
Soddy immediately adopted the term.1913
To penetrate the nucleus, Cockcroft and Walton built a voltage multiplier: they build a potential of 800 kilovolts. The potential accelerated protons down an evacuated tube eight feet long. In 1932 they put a lithium target at the end of the tube and found that protons disintegrated a lithium nucleus into two alpha
John Cockcroft, Ernest Rutherford, and E.T.S. Walton.
The Nobel Prize in Chemistry
1899; Rutherford discovered uranium compounds to produce three kinds of radiation;according to their penetrations named a, b, and g.
W. Pauli (1930)
E. Fermi (1933)
By analogy with quantum theory, predicted neutrino’s weak interaction with matter
From non conservation of energy and momentum in beta decay